Question

How to find the numbers that are the sum of fifth powers of their digits in C#

Answer 1

using System;

class DigitPowerSum
{
    // Computes the sum of the fifth powers of the digits of n
    static int SumOfFifthPowers(int n) {
        int sum = 0;
        
        while (n > 0) {
            int digit = n % 10;
            sum += digit * digit * digit * digit * digit;
            n /= 10;
        }
        
        return sum;
    }

    static void Main()
    {
        for (int i = 1000; i < 1_000_000; i++) {
            if (i == SumOfFifthPowers(i)) {
                Console.WriteLine(i);
            }
        }
    }
}



/*
run:

4150
4151
54748
92727
93084
194979

*/

 

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